Still working- but abandoned Rated 3 out of 5 stars
This still in many ways is a good extension and it should keep working indefinitely- at least on Palemoon. PM is stable and doesn't have Failfox's disastrous UI changes every five minutes.
However, support is done and the developer's email has gone dead. If you try to contact him it will just bounce back as undeliverable.
It might be possible to replace this one with several other extensions- but that would be considerable work putting it all together.